Eoc Review Flashcards
What type of scientific resources are reliable and which are not
Reliable sources: edu, .gov, scientific journals
Unreliable: wiki, back of cereal boxes
How are scientific inferences in biology made?
observations, then logical inferences
What is science
an organized way of gathering and analyzing evidence about the natural world
What is pseudoscience
Fake science
How is a theory developed
when strong information is consistent but cannot be proven
How are theories and laws different
Theories cannot be proven, but laws can be proven time and time again
What are the four macromolecules?
-Carbohydrates
Proteins
-lipids
-nucleic acids
Primary function for carbohydrates?
used for energy and structural purposes
primary function of proteins?
control reaction rate, help fight diseases
primary function of lipids?
-fat, oils, waxes used to store energy
primary function of nucleic acids?
store and transmit hereditary or genetic info (DNA/RNA)
Explain how enzymes speed up the rate of a biochemical reaction
by lowering the activation energies, which has a dramatic effect on how quickly reactions are completed
What happens to an enzyme if the environment changes?
they might slow down chemical reactions
Explain the cell theory
All living things are made up of cells, cells are produced from existing cells, & cells are the basic unit of structure in all living things
Compare and contrast the structures found in plant cells and animal cells
Animal cells don’t have a cell wall or chloroplasts but plant cells do. They are both eukaryotic cells
Compare and contrast the structures found in prokaryotic cells & in eukaryotic cells
Prokaryotes: smaller and simpler (bacteria)
Eukaryotes: larger and more complex, many specialized structures w/ different jobs (plants, animals, fungi)
Explain the role of the cell membrane during active and passive transport
Cell membrane in passive transport:
movement of materials across membrane WITHOUT using energy
Cell membrane in active transport:
Movement of materials against a concentration difference that REQUIRES energy
What are the prokaryote structures and their functions?
Cell Wall: supporting layer surrounding cell And adding protection.
Cell Membrane: in all cells and regulates what enters and leaves cell.
Cytoplasm: the fluid portion of the cell outside the nucleus, gives cell it’s shape
Plasmid: found in bacteria and used in DNA to transfer genes between cells
Ribosomes: particles of RNA and protein found in the cytoplasm
Flagella: tail on sperm used for swimming
What are the eukaryote structures and their functions?
Cell wall: supporting layer surrounding cell and adding protection
Cell membrane: in all cells and regulates what enters and leaves cell
Cytoplasm: the fluid portion of the cell outside the nucleus, gives cell it’s shape
Nucleus:
Explain what happens when a cell is placed in the following solutions: hypertonic , hypotonic , and isotonic
Hypertonic: shrinks
Hypotonic: gets bigger
Isotonic: stays the same